Lock for incandescent lamps



Sept. 23, 1930. HOWELL 1,776,507

LOOK FOR INCANDESCENT LAMPS Filed June 1928 2 Sheets-Sheet 2 ill/[W W I l- IIMIII VII INVENTOR ROBERT OHOWEAL ATTORN EY Patented Sept. 23, 1930 nosmeesowm, oermits miss; new 1 rgocizron cmnssememms 1 Application filed me 11,

.Thelpresent invention relates, generally,t a locking arrangement-forholding electric ,lamp bulbs in their socketsyand' the inven tionirelatesymore particularly; to .an electric 5 Tlamp lock whichis automatic. in its locking function andwhich is operable by a magnet tovunlocln and thelocking arrangement is "adaptablefor general things other than elec tric bulbs.

1928RQSer iaINo. 34345.

belowtlieflargest diameter ide eeee i ings-9 and respectively. Abovesaidopenings9 flIlClIO said shade 3 hasanopening- 1 1 'ofwthe same size as openings '9 and 10, and

' s'In -the accompanying drawings there are shown for purposes of illustration one' form I. j Fig.1 is an elevation View in "thelockingarrangement; a i 351 @Figi 5 is a section'view along the line 55 V Fig; 7Lis'an' 'e'levationview' of 'the parts 10 An object of the invention is to provide a lock operableby a magnet to open it, which lock-has in'combination therewithparts for engaging anelectriclamp' bulb and forconnecting it tothe'lock.'-' V l 1 @Various other iobjectsfland advantages of theinvention will-be obvious from-the fola lowing particular descriptionof forms of apj paratus embodying the i'nventi'on or from an inspection ofthe accompanying drawings; ,20; and-the invention alsocons'ists in certain new and u'seful features of construction-and 'com- I be binations of'parts'hereinafter' set forth and tends a rod 12 which at its lower'end hasa head 13 and at. its upper end an. annular notch '14; a 011' said, rod 12 between said shaded and lug 7 isa compressionspring l5which presses againstithese two members'and tends to hold ring At, through lug 7, inengaging relation {on Y said lampl", but said spring 1 5 'canlbeomi-tted;

, vOnjthe upper end of said rod l2 at the upper sideofsaid shade 3 is a lockingarrange- ,1 ment; for engaging-the upper side of said shade 3 and locking engagement withsaid rod 12st saidlannular notch 14, comprising a t'ube,

16 closed at oneuend"byxthe .disk17 secured "therein by a drive fit and by ha'Ving-theedges of tube 16'turned over to prevent outward,

displacementw Adj acent said disk, 17 ,pm the tinner side therefrom,-said tube 16 has formed part section; therethrough a pair of diametrically opposite I i Fig. Qis'a bottomplan view 1 openings'18 and 19 ofa size to;ad"1nit said'rod 'Fig.'-3isa View takenalong theline 3+ 12 with a sliding Secured in saidrtub e 16 of Fig; 1",'-looking*in the direction ofthearby drive 'fit isa sleeve 20 which extendsfrom wgg v, K I va" pQint'adJaCent said" openings; 18, :19 to; a I v Fi 415 3 *pointat'aflittle distanceffr'om theotherendof tube 16 and which has near its inner end an r inner annular shoulder-2'1. Against theouter end of; said sleeve 20 is 'an annulardisc 22 which is held in place by the turned over edges 2:30ftheend of tube 16-. Inisaid sleeve c 20an'dl-having sliding fit therewith is; the annular washer i24whi'ch' 'is normall'y held against 7 said" shoulder 21 by-"a: compression spring 25 which latter bears at one end against a said annular Washer 24 and at its otherend against saidannular disk 22; a Extending-centrally through said' spring claimed; v

" ofapparatus with certain modifications thereofembodying the invention, inwhich sectional View showingdetails "of I 97 of y i g in the 'direction ofthe'ar- J p namamprummagin a ri a; I I V 7 7 ""In all the abovedescribed'gviews like re'feren'c'e characters areusedto designatecorrespondingparts-throughout.

i 2' Referring, now to the drawings the referthrough said openings 9, 10andll1 thereeireo i r ence' eharacte'r 1 indicatesan electriclamp socket'ogt the conventional typewhich holds '"screwedgthereiri'ithe bulbous lamp globe 2 and a Ineta'lsha'de 3 over said globe'2. Positioned on-said globe- 2, one above and one 25 and secured to said annular washer24'by the pin 26 is'the'bolt 27 preferably of iron or steelorhaving its outer end at least of magn'etic material." Said bolt has asliding'fit in the central opening of said annular disk 22 in which'the outer end of the bolt rests with its outer face flush with the outer face ofsaid disk 22. 7 The inner end'of said bolt 27 extends from said'annular washer'24 to apoint on a line between'saidlopenings 18 and'19 and is of a width to have a sliding fitinto the annular. notch' l l in saidrod 12 when the latter is positioned insaid openings 18 and: 19. The distance of said notch 14 fromsaid head 13 is preferably such thatsaid head 13 holds.

ring 5 in locking'engag'ementcl sel ""ag" ns the'bottom of the bulb of said lamp 2 when the'parts are in locked engagement as shown in thedrawings, withsaid;tube;16, lying against the outer side of said shade 3. 4

Said locking arrangement is positioned on said rod 12 by pushing the endofthe latter through saidholes 18 and 19; the pointed end ofthe rod 12 serving to 'push 'said bolt 27 back against the compression of "said spring until said annular notch l 14 comes to a position fully adjacent ithe end. of the bolt when the latter-will be pushed by saidsp'ring 25 eyelets iand ;i-nto lockingfengagement"into notch 14: and the e'nd" of-rod 12 will extend ashort distance beyondlt b z i v T0? unlockjthe arrangement an'electromag- I net, or other: magnet, is applied to' theiouter r endofsaid bolt 27 to draw the inner end from i engagement with the] notch-in said rodv 12 'whereuponthelatter can be withdrawn 7 "-lt' will be of course understood thatiaplurality of annular: notches or othernotches -;s imilar to notch ll'can' be formed insaid rod 12 to adapt the device to lan'ips ;shades,etc.

fit' diiferent sizes of iInFigs. 6 and7 are shown alternate forms of rings4 and 5 in which the wire rings 28 and. 29 are secured-to each other at one side by the sleeve l1i nge',6and on the other side have formed integral therewith, respectively, the 31, instead of the lugs 7 and 18 of Fig.1..- v'

: Y From this it can b'e'seen that a strong,lock-' in'g arrangement jis'provid'ed which cannot be i opened nor :the' lampv removed therefrom without the use .ofa.-zstron-g' *electromagnet to actuate said :bolt 27to unlock itrfrozn'said 1 While 'I J have shown and described ;and lhavepointed: out in :the annekediclaimsi cer- ..tain novel features of-the invention, itcwillxbe understood that various omissions; substitutions and changesiinthe "forms and I details .0f

l ith'e devices illustrated and in'its-useiand; operation maybe made by those skilled in the ar t'withoutdeparting from the spirit of the I invention, 5 I

Having thus invention, what vI clairn'and' desireto protect by Letters Pata '7 7 1'. In combination Jwithfan electric socket,- adapted to 'hol'd a lamp having a bulbous; globe;'.a pair .of' rings adapted to be pOSi- Jtione'd in en aging; relation about. said lamp,

one above and the other below "thespart of largest diameter of the bulb of said'lamp v globe; said rings being closely adjacent each other at one side thereof and havinga hinge Y which. secures them together at saidvside ;'an

eyelet on each of said rings on the opposite sideyazmemberzfixed to said socketand having an opening therethrough at a p'oint above Y 7 said part of largest diameter of'said lamp obe; a.r di,ex ead githrens Said eyelets and-said opening with -a- 'c'lbse fit'an'd having, -a stop vmemberengaging the lowerof said eyeletsand ashoulder thereon at a point a above said lixedamember and a locking means for engaging said rod at said shoulder having afspring actuatedbolt,rwh-ich bolt has: a magnetic portion adapted toi'betmoved by a magnet to openisaid bolt: i

i2.f'In combination 5 with an electric 1 light; socket; a lampin said socket; a member fixed .to said socketandshavingxian opening therethrough; a rod having means thereon adapted to 'engage sa d lamp and limlt'it against movement fromsaid socket, said rod having, a shoulder at tit's upper end and being adapted to be inserted throughl'said opening ,in said fined" member '.to b ring said :shoulder' above l engaging said rod at said shoulder liav'inga "spring actuated vbolt:,-:-:v,vh'ich bolt has a; magnetic portion adapted to. beimovedby; aLmag- 1-' 'netito open said bolt. 1 l V=- 3. In combination with? an electric light "socket adapted to hold a- Y lamp; 1 a member fixed' to said socket andhaving an opening 4. In combination with an 'ele in said socket having abulbous-globaja ring engaging ithefree end :of; said lamp; globe and havingan eyelet formed at one side-thereof, a headed rod extending throughsaideye said fixed; member I and a locking means fon let and positionediwithifi Said Shade andhav- 7 ing its head engaging said eyelet, said-shade c.

aving an aper uret e'rein' th ugh whic a portion of said rod extends,- said projecting portion of the rodhaving an annular'notch end with an opening therethrough and having a pair of oppositely spaced transverse openings through the Wallsthereof adjacent said closed end and;th'roughfwhic'hv saidlrod extherein; a hollow member; closed; at one-end and havmg aclosure fixture across itsother tends with a sliding'fit, a; locking armature positioned within saidgh'gllow member an projecting at one end into the opening in said closure fixture and at its other end into said notch in said rod, and spring means positioned within said member and cooperating with said closure fixture and armature to retain the end thereof in engagement with the notch of said rod, to thereby lock the lamp globe within its socket.

h V In combination with an electric light socket for holding a lamp, a pair of rings positioned in engaging relation about said lamp, one above and the other below the part of the largest diameter of said lamp globe,

1 said rings being connected closely adjacent each other at one side thereof and having 1 eyelets at their opposite sides, a memberfixed to said socket and having an opening there- I through in line with the eyelets of said rings,

a rod extending through said eyelets and said opening and having a headed portion engaging the outer of said eyelets and a notch therein above said member, and a hollow Vmember mounted onsaid rod in locking engagement therewith and engaging said fixed member,'tothereby retain said globe within its socket.

I In testimony thatI claim the invention set forth above I have hereunto set my hand this 7 24th day of May, 1928. y

7 ROBERT C. HOWELL. 

